Bell Disney Minnie Mouse Pom Pom Ears Bike Helmet, Toddler 3+ (48-52 cm): Recommended for Toddler ages 3+ Fits head sizes 18.9 - 20.5" (48-52cm) IMPORTANT: Head sizes and shapes vary, even within an age range. Using a helmet that does not fit can be dangerous. True Fit system with self-adjusting belt allows a proper fit with just one simple adjustment 6 vents to keep little heads cool Complies with the U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 1 and Older (Extended Head Coverage). 3D pom pom ears and Minnie\'s signature bow Pink glitter bottom wrap